How is the application of sodium carboxymethyl cellulose in lithium ion batteries?

What is sodium carboxymethyl cellulose?

Sodium carboxymethylcellulose (also known as sodium carboxymethylcellulose, carboxymethylcellulose, CMC, Carboxymethyl, CelluloseSodium, and SodiumsaltofCaboxyMethylCellulose) is the most widely used and most widely used cellulosic species in the world.

Referred to as CMC-Na, it is a cellulose derivative with a glucose polymerization degree of 100-2000, and its relative molecular mass is 242.16, white fibrous or granulated powder. Odorless, tasteless, tasteless, hygroscopic, insoluble in organic solvents, this article focuses on the progress of the application of sodium carboxymethyl cellulose in lithium ion batteries.

Progress in the application of sodium carboxymethyl cellulose in lithium ion batteries

At present, lithium ion battery production generally uses polyvinylidene fluoride [PVDF, (CH: a CF:)] as a binder. PVDF is not only expensive, but also requires the use of explosive, environmentally unfriendly organic solvents such as N-methylpyrrolidone (NMP) in the application process. The air humidity of the production process is strict, and it is easy to be associated with metallic lithium. The lithium intercalation graphite has a secondary reaction, especially at high temperature there is a risk of self-heating out of control _2J. The water-soluble binder sodium carboxymethylcellulose (CMC) is used as an alternative to PVDF for electrode materials, which avoids the use of NMP, reduces costs and reduces environmental pollution. At the same time, the production process does not require environmental humidity. Increase battery capacity and extend cycle life.

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